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Linux PC Robot < 500$ DIY Linux robot

"The robot can be build from junk taken out of old children's
toys, there's even a tutorial for building an actuator from a
mouse. With the children's"ride around" toy wheels and motors, it
can accommodate some serious weight (60~80 lbs total, is that
enough for a water gun?). It would be nice to build some more
pleasing outer shell for it and an android app for remote
control.

"With the Linux OS, it can use a wealth of public research
software as well as voice synthesis and mapping software. The
possibilities are endless."